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You searched for: subject:"linear equations"
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[texts]Exact solutions of linear equations with rational coefficients (Volume 75B) - Fraenkel, A.S.
Journal of Research of the National Bureau of Standards
Keywords: Congruences; exact solutions; linear equations; modular arithmetic
Downloads: 100
[texts]Development of a Flexible Framework for Hypersonic Navier-Stoke Space Shuttle Orbiter Meshes - Alter, Stephen J.
A flexible framework constructing block structured volume grids for hypersonic Navier-Strokes flow simulations was developed for the analysis of the Shuttle Orbiter Columbia. The development of the framework, which was partially basedon the requirements of the primary flow solvers used resulted in an ability to directly correlate solutions contributed by participating groups on a common surface mesh...
Keywords: LINEAR EQUATIONS; NONLINEAR EQUATIONS; CONJUGATES; RADII; ELLIPSOIDS; QUADRATIC EQUATIONS
Downloads: 61
[texts]Data Processing for NASA's TDRSS DAMA Channel - Long, Christopher C.
A concept for the addition of a Demand Assignment Multiple Access (DAMA) service to NASA's current Space Network (SN) is developed. Specifically, the design of a receiver for the DAMA channel is outlined. Also, an outline of the procedures taken to process the received service request is presented. The modifications to the (SN) system are minimal. The post reception processing is accomplished using standard commercial off the shelf (COTS) packages...
Keywords: CODING; ALGEBRA; MATRICES (MATHEMATICS); PARITY; LINEAR EQUATIONS; THEOREMS; GEOMETRY
Downloads: 120
[texts]A Regional Analysis of Cloudy Mean Spherical Albedo over the Marine Stratocumulus Region and the Tropical Atlantic Ocean - Ginger, Kathryn M
Since clouds are the largest variable in Earth's radiation budget, it is critical to determine both the spatial and temporal characteristics of their radiative properties. This study examines the relationships between cloud properties and cloud fraction in order to supplement grid scale parameterizations. The satellite data used in this study is from three hourly ISCCP (International Satellite Cloud Climatology Project) and monthly ERBE (Earth Radiation Budget Experiment) data on a 2.50 x 2.50 l...
Keywords: HIERARCHIES; WEIGHTING FUNCTIONS; GROUP THEORY; CLASSICAL MECHANICS; LINEAR EQUATIONS
Downloads: 63
[texts]Astronomy subsequence in a multi-disciplinary earth orbital space station - Zill, N
No Abstract Available
Keywords: ERRORS; LAUNCH VEHICLES; SUBROUTINES; TRAJECTORIES; CONVERGENCE; LINEAR EQUATIONS
Downloads: 65
[texts]Schaum's Theory & Problems of Matrices - Frank Ayres Jr.
Frank Ayres Jr. Schaum's Theory & Problems of Matrices Schaum Publishing Co ( McGraw-Hill ) 1st.ed. 1962 Acrobat 7 Pdf 8.58 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Matrix; Determinant; Fields; Vector Spaces; Linear Equations; Hermitian Forms; Lambda
Downloads: 4,972
[texts]Math 380 Elementary Algebra Textbook - Math 380 Elementary Algebra Textbook
Math 380 Elementary Algebra Textbook
Keywords: inequalities; algebra; linear equations; factoring; graphing; quadratics; math
Downloads: 3,529
[texts]An extension of infinitesimal calculus - Laugwitz, D.
No Abstract Available
Keywords: LINEAR EQUATIONS; SUPERSONIC FLOW; WINGS; PROBLEM SOLVING; THREE DIMENSIONAL FLOW
Downloads: 154
[texts]Further evaluation of the constrained least squares electromagnetic compensation method - Smith, William T
Technologies exist for construction of antennas with adaptive surfaces that can compensate for many of the larger distortions caused by thermal and gravitational forces. However, as the frequency and size of reflectors increase, the subtle surface errors become significant and degrade the overall electromagnetic performance. Electromagnetic (EM) compensation through an adaptive feed array offers means for mitigation of surface distortion effects...
Keywords: ACOUSTICS; FLAT PLATES; SOUND WAVES; STRUCTURAL VIBRATION; UNSTEADY AERODYNAMICS; WAVE EQUATIONS; LINEAR EQUATIONS; MOMENTUM
Downloads: 54
[texts]A random iteration process (sluchaynyy iteratsionnyy protsess) - Vorobyev, Y. V
Solution of linear equation Ax equals f using random iteration processes - computer programming
Keywords: COMPUTER PROGRAMMING; CONVERGENCE; ITERATION; LINEAR EQUATIONS; RANDOM PROCESSES; COMPUTER PROGRAMMING; ITERATION; LINEAR EQUATION
Downloads: 83
[texts]Adhesion of gold to various planes of copper studied with LEED - Buckley, D. H
Adhesion of gold on copper planes studied with low energy electron diffraction
Keywords: APPROXIMATION; BOUNDARY VALUE PROBLEMS; EUCLIDEAN GEOMETRY; HYDRODYNAMICS; INTEGRAL EQUATIONS; LINEAR EQUATIONS
Downloads: 105
[texts]Remote sensing of ocean current boundary layer - NON
There are no author-identified significant results in this report.
Keywords: COMBUSTION; SOUND WAVES; SUPERSONIC NOZZLES; WAVE REFLECTION; BOUNDARY VALUE PROBLEMS; DIFFERENTIAL EQUATIONS; FREQUENCY STABILITY; LINEAR EQUATIONS
Downloads: 86
[texts]Satellite power systems program - Larock, R. I
The Department of Energy and NASA are engaged in an intense three-year analysis to determine what course of action the Federal government should pursue relative to this nonconventional energy system. Information is presented in the form of charts for the following: (1) program organization; (2) major program milestones; (3) activity schedule for the program; (4) preliminary baseline comparison by two Systems Definition Centers; and (5) program definition plan (funding by agency management respon...
Keywords: ANALYSIS (MATHEMATICS); COMPUTER PROGRAMS; INTEGRAL TRANSFORMATIONS; STRUCTURAL ENGINEERING; LINEAR EQUATIONS; OPTIMIZATION; TRUSSES
Downloads: 78
[texts]Weightlessness and artificial gravitation - Shapiro, Ya. M
Weightlessness and artificial gravity simulation
Keywords: DIFFERENTIAL EQUATIONS; GAME THEORY; LINEAR EQUATIONS; VECTOR ANALYSIS; CONVEXITY; MATRICES (MATHEMATICS); SET THEORY; VECTOR SPACES
Downloads: 139
[texts]One direct diagram of a method of characteristics for the calculation of a three dimensional gas flow - Grigoryev, Ye. I., et al
Calculating three dimensional flow of gas
Keywords: CIRCULAR CYLINDERS; NAVIER-STOKES EQUATION; SOUND WAVES; WAVE PROPAGATION; FLOW VELOCITY; LINEAR EQUATIONS
Downloads: 89
[texts]Representation of the equation of state of a real gas by elementary functions, and methods of their determination - Kazavchinskiy, Ya. Z
Linear equation of state for real gas derived over wide range of density variation, including saturation curve and liquid phase region
Keywords: EQUATIONS OF STATE; LINEAR EQUATIONS; LIQUID PHASES; REAL GASES; LINEAR EQUATION; REAL GAS; STATE EQUATION
Downloads: 105
[texts]PROPELLERS AND HELICOPTER BLADES OF FIBER-REINFORCED SYNTHETIC RESIN MATERIALS - HUETTER, U
SHELL STRUCTURES FOR PROPELLERS AND HELICOPTER BLADES ARE PREDOMINANTLY UNDER CENTRIFUGAL LOADS AND THEREFORE ESSENTIALLY SUBJECTED TO SUCH EXTENSIVE RADIAL STRESSES THAT FULL ADVANTAGE CAN BE TAKEN OF THE HIGH TENSILE STRENGTH OF STRAND-REINFORCED SYNTHETIC RESIN MATERIALS. GREAT DIFFICULTIES HAVE BEEN ENCOUNTERED IN THE PAST WITH THE DIFFUSION OF END LOADS INTO FIBERGLASS REINFORCED COMPOUND MATERIALS...
Keywords: ASYMPTOTES; DIFFERENTIAL EQUATIONS; LINEAR SYSTEMS; LINEAR EQUATIONS; MATRICES (MATHEMATICS); TIME CONSTANT; TIME LAG
Downloads: 168
[texts]On the resonance concept in systems of linear and nonlinear ordinary differential equations - Karim, R. I. I. A
Resonance cases for systems of linear and nonlinear differential equations
Keywords: DIFFERENTIAL EQUATIONS; LINEAR EQUATIONS; NONLINEAR EQUATIONS; RESONANCE; DIFFERENTIAL EQUATION; LINEAR EQUATION; NONLINEAR EQUATION; RESONANCE
Downloads: 142
[texts]Formulation of solutions for linear differential equations with quasiperiodic coefficients by means of the accelerated convergence method - Mitropolskiy, Yu. A.
Solutions for linear differential equations with quasi-periodic coefficients by accelerated convergence method
Keywords: COEFFICIENTS; CONVERGENCE; DIFFERENTIAL EQUATIONS; FORMULATIONS; LINEAR EQUATIONS; PROBLEM SOLVING; CONVERGENCE; DIFFERENTIAL EQUATION; PROBLEM SOLVING
Downloads: 70
[texts]Statistical aspects of carbon fiber risk assessment modeling - Gross, D.
The probabilistic and statistical aspects of the carbon fiber risk assessment modeling of fire accidents involving commercial aircraft are examined. Three major sources of uncertainty in the modeling effort are identified. These are: (1) imprecise knowledge in establishing the model; (2) parameter estimation; and (3)Monte Carlo sampling error. All three sources of uncertainty are treated and statistical procedures are utilized and/or developed to control them wherever possible.
Keywords: BOUNDARY VALUE PROBLEMS; EIGENVALUES; PARTIAL DIFFERENTIAL EQUATIONS; CONVERGENCE; LINEAR EQUATIONS; NONLINEAR EQUATIONS; NUMERICAL STABILITY
Downloads: 99
[texts]A MONITOR DISPLAY FOR AUTOMATICALLY REGULATED STEEP APPROACHES - SCHENK, H. D.
A MONITOR DISPLAY IS DISCUSSED FOR AUTOMATICALLY REGULATING STEEP APPROACHES. ADVANTAGES OF THE STANDARD ILS APPROACH PROFILE ARE PRESENTED, AND THE PROBLEM OF V/STOL FLIGHT GUIDANCE IS TREATED WITH RESPECT TO THE OPERATIONAL REQUIREMENTS OF THE ICAO. A STEEP LANDING AIRCRAFT IS PROPOSED TO HANDLE THESE PROBLEMS; A REDUCED NOISE BURDEN FOR RESIDENTS OF THE AIRPORT ALSO RESULTS FROM THIS APPROACH PROFILE.
Keywords: BLOCK DIAGRAMS; COMPUTER PROGRAMS; SYMBOLIC PROGRAMMING; FORTRAN; LINEAR EQUATIONS; TRANSFER FUNCTIONS
Downloads: 54
[texts]Asymptotic methods in the theory of linear differential equations - Feshchenko, S. F.
Asymptotic methods of integrating linear differential equations
Keywords: ASYMPTOTES; ASYMPTOTIC METHODS; DIFFERENTIAL EQUATIONS; LINEAR EQUATIONS; ASYMPTOTIC METHOD; DIFFERENTIAL EQUATION; LINEAR EQUATION
Downloads: 177
[texts]Design and development of a brushless, direct drive solar array reorientation system - Jessee, R. D
This report covers the design and development of the laboratory model, and is essentially a compilation of reports covering the system and its various parts. To enhance completeness, the final report of Phase 1 covering circuit development of the controller is also included. A controller was developed for a brushless, direct-drive, single axis solar array reorientation system for earth-pointed, passively-stabilized spacecraft...
Keywords: DIFFERENTIAL EQUATIONS; LIAPUNOV FUNCTIONS; LINEAR EQUATIONS; PROBLEM SOLVING; MATRICES (MATHEMATICS); PERIODIC FUNCTIONS; VECTORS (MATHEMATICS)
Downloads: 227
[texts]SELECTION OF A ZERO APPROXIMATION FOR THE POSITION OF AN ARTIFICIAL EARTH SATELLITE IN A PHASE OF ITS ORIENTED MOTION USING A DIPOLE APPROXIMATION OF THE GEOMAGNETIC FIELD - NON
THE PROBLEM OF DEFINING THE ZERO APPROXIMATION FOR THE ANGULAR POSITION OF A ROUND ARTIFICIAL EARTH SATELLITE OF ORIENTED MOTION IS DISCUSSED USING AIRCRAFT ANGLES PSI, PHI AND THETA (YAW, BANK, PITCH, RESPECTIVELY). TRIGONOMETRIC POLYNOMIALS OF THE SECOND POWER ARE USED IN TERMS OF POWERS OF THE ARGUMENT OF LATITUDE.
Keywords: ALGORITHMS; LINEAR EQUATIONS; PROBLEM SOLVING; ARITHMETIC; DIGITAL COMPUTERS; PARALLEL COMPUTERS; POISSON EQUATION
Downloads: 151
[texts]Constrained minimization under vector-valued criteria in linear topological spaces - Da Cunha, N. O.
Constrained minimization under vector valued criteria in linear topological spaces
Keywords: BANACH SPACE; CONTROLLABILITY; DIFFERENTIAL EQUATIONS; LINEAR SYSTEMS; LINEAR EQUATIONS; OPERATORS (MATHEMATICS); TOPOLOGY
Downloads: 168
[texts]Aeronautical Engineering: A Continuing Bibliography with Indexes - NON
This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1998-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems...
Keywords: LOADS (FORCES); RECTANGULAR PLATES; BUCKLING; DEFORMATION; LINEAR EQUATIONS; NONLINEAR EQUATIONS; POWER SERIES; DEFLECTION; DISPLACEMENT
Downloads: 178
[texts]Two interviews with: Academician Viktor Ambartsumyan and Dr. Wernher von Braun - NON
No Abstract Available
Keywords: AUTOMATIC CONTROL; INVARIANCE; LINEAR SYSTEMS; PERTURBATION; STATISTICAL ANALYSIS; DIFFERENTIAL EQUATIONS; FUNCTIONS (MATHEMATICS); LINEAR EQUATIONS
Downloads: 128
[texts]Geosynchronous platform definition study. Volume 7: Geosynchronous transporation requirements - Myers, H. L
The analyses and trade studies are presented which were conducted to define the interfaces between geosynchronous platforms and the space transportation system. Mission timelines are synthesized for both manned and unmanned placement and servicing operations. Physical, operational, and functional interfaces between platforms and the space shuttle and tug are derived from the timelines. Where interface incompatibilities exist, alternate approaches are evaluated and a preferred approach is defined...
Keywords: AERODYNAMIC CONFIGURATIONS; INTEGRAL EQUATIONS; POTENTIAL FLOW; FLOW DISTRIBUTION; INCOMPRESSIBLE FLOW; LINEAR EQUATIONS; PRESSURE DISTRIBUTION
Downloads: 92
[texts]Numerical Methods 1 ( Iteration Programming & Algebraic Equations ) - Ben Noble
Ben Noble Numerical Methods 1 ( Iteration Programming & Algebraic Equations ) Oliver & Boyd 1964 Acrobat 7 Pdf 19.0 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Iterative Methods; Programming; Matrix Methods; Eigenvalues; Eigenvectors; Simultaneous Linear Equations
Downloads: 739
[texts]Principles of Mathematical Physics - William V. Houston

Keywords: differential equations; mechanics; linear equations; mathematical physics; hamilton; calculus of variations; physics; classical mechanics; vibrating systems
Downloads: 542
[texts]Numerical Analysis - Charles Dixon
Charles Dixon Numerical Analysis Blackie & Son Ltd 1974 Acrobat 7 Pdf 5.59 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Errors; Finite Differences; Integration; Iteration; Linear Equations; ODE; Taylor Series
Downloads: 559
[texts]Development of a technique for determination of component shock specifications. Volume 2: Compilation of four coordinate shock and Fourier spectra for simple and complex shock motions - Gertel, Maurice
No Abstract Available
Keywords: ALGORITHMS; LINEAR EQUATIONS; MATRICES (MATHEMATICS); MATRIX THEORY; VECTORS (MATHEMATICS); CONTINUITY EQUATION; INEQUALITIES; THEOREM PROVING
Downloads: 92
[texts]Principles of Mathematical Physics - William V. Houston
William V. Houston Principles of Mathematical Physics McGraw-Hill Book Company Inc. 1948 ( International Series in Pure and Applied Physics ) Acrobat 7 Pdf 16.4 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Differential Equations; Mechanics; Linear Equations; Calculus of Variations; Hamilton; Vibrating Systems; Vector; Electromagnetic; Relativity
Downloads: 2,060
[texts]The Soyuz and Apollo spacecraft - Yudin, I
The Soyuz and Apollo spacecrafts, as well as the docking module, are extensively described. The exterior structure and interior design of the two spacecrafts are discussed in detail. The Soyuz consists of a reentry module, an orbit module, and an instrument-system module, while the Apollo consists of a command module, a service module, and a docking or transfer module.
Keywords: DIFFERENCE EQUATIONS; PARTIAL DIFFERENTIAL EQUATIONS; PROBLEM SOLVING; LINEAR EQUATIONS; NONLINEAR EQUATIONS; ROOTS OF EQUATIONS
Downloads: 193
[texts]Swept Shock/Boundary Layer Interaction Experiments in Support of CFD Code Validation - Settles, G. S.
Research on the topic of shock wave/turbulent boundary-layer interaction has been carried out under the subject Grant during the past three-year period at the Penn State Gas Dynamics Laboratory. This report describes the experimental research program which provides basic knowledge and establishes new data on heat transfer in swept shock wave/boundary-layer interactions. An equilibrium turbulent boundary-layer on a flat plate is subjected to impingement by swept planar shock waves generated by a ...
Keywords: PARALLEL PROCESSING (COMPUTERS); MASSIVELY PARALLEL PROCESSORS; SUPERCOMPUTERS; CONVECTION-DIFFUSION EQUATION; ITERATION; LINEAR EQUATIONS
Downloads: 161
[texts]Linear Algebra - G. Hadley
G. Hadley Linear Algebra Addison-Wesley Publishing Company Inc. 1977 ( 1961 ) Acrobat 7 Pdf 10.8 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Linear Circuit Theory; Vectors; Matrices; Determinants; Transformations; Linear Equations; Quadratic Forms
Downloads: 3,186
[texts]SOME CHARACTERISTICS OF THE CAVITATION EROSION OF METALS IN LIQUID OXYGEN - KRUT, Y. Y.
THE CAVITATION ACTION OF LIQUID OXYGEN AND WATER ON METALS WITH VARIOUS LATTICE ARRANGEMENTS WAS STUDIED IN LEAD, COPPER, NICKEL, IRON AND ZINC. THE HIGH RESISTANCE OF IRON AND ZINC TO THE CAVITATION ACTION OF OXYGEN WAS REVEALED. THE RESISTANCE OF LEAD, COPPER AND NICKEL IN CAVITATING OXYGEN DID NOT INCREASE IN COMPARISON WITH THEIR RESISTANCE IN CAVITATING WATER. THERE WAS NO OXIDATION OF THE METALS DURING TESTS IN OXYGEN.
Keywords: BASALT; CHEMICAL COMPOSITION; LINEAR EQUATIONS; SERPENTINE; SILICON COMPOUNDS; ACIDS; CHEMICAL ANALYSIS; PETROGRAPHY
Downloads: 163
[texts]Solid state switch - Booth, R. A.
Solid state switching circuit design to increase current capacity of low rated relay contacts
Keywords: APPROXIMATION; PRESSURE EFFECTS; SHOCK WAVE INTERACTION; COMPRESSIBLE FLOW; EXPLOSIONS; LINEAR EQUATIONS; PROBLEM SOLVING; SURFACE PROPERTIES; GAS DYNAMICS; NONLINEARITY; PRESSURE DISTRIBUTION
Downloads: 85
[texts]Astronomy on the Shuttle Sortie - Patterson, N. P
Application of space shuttle for conducting astronomy during space missions and requirements for equipment
Keywords: DIGITAL COMPUTERS; GAUSS-MARKOV THEOREM; STOCHASTIC PROCESSES; COMPUTER PROGRAMS; COMPUTERIZED SIMULATION; DIFFERENTIAL EQUATIONS; LINEAR EQUATIONS; MATHEMATICAL MODELS; SPECTRUM ANALYSIS
Downloads: 82
[texts]Gamma-Ray Burst Model Constraints Imposed by BATSE Observations - Hakkila, Jo
The investigative team for the CCRO Cycle 5 Guest Investigation 'Gamma-Ray Burst Model Constraints Imposed by Burst and Transient Source Experiment (BATSE) Observations' consisted of myself, Dr. Charles A. Meegan (NASA/MSFC), Dr. Geoffrey N. Pendleton (UAH), Dr. John M. Horack (NASA/MSFC), and Dr. Michael S. Briggs (UAH). The purpose of the research was to continue studying the BATSE gamma-ray burst angular and intensity distributions in order to better determine the gamma-ray burst distance sca...
Keywords: AEROACOUSTICS; MATRICES (MATHEMATICS); SOUND WAVES; BOUNDARY CONDITIONS; FINITE DIFFERENCE THEORY; WAVE PROPAGATION; VORTICITY; INHOMOGENEITY; ACOUSTIC SCATTERING; LINEAR EQUATIONS
Downloads: 59
[texts]royalPrecision :: RPC-4000 :: programWriteups :: D4-02.0 Simultaneous Linear Equations 3
From the bitsavers.org collection, a scanned-in computer-related document.royalPrecision :: RPC-4000 :: programWriteups :: D4-02.0 Simultaneous Linear Equations 3
Keywords: program; linear; equations; relative; coefficient; simultaneous; matrix; input; subject; augmented; linear equations; coefficient matrix; subject program; relative error; simultaneous linear
Downloads: 23
[texts]Combining Satellite Data, Trajectory Modeling and Surface Insolation Measurements to Deduce the Direct Radiative Effect of Smoke Aerosol - Stackhouse, Paul W., Jr.
In this paper, we have introduced a method of inferring the radiative effect of smoke aerosols using a technique that combines satellite remote sensing with trajectory modeling. The results shown here clearly show large flux biases between theoretical and measured radiative fluxes correlate with the arrival of smoke aerosol to the area. Further analysis is required to convincingly demonstrate that the reason for these differences is the radiative effect of the smoke aerosols...
Keywords: INTERPOLATION; AEROSPACE VEHICLES; LOADS (FORCES); STRAIN MEASUREMENT; STRUCTURAL FAILURE; MATHEMATICAL MODELS; REAL TIME OPERATION; OPTIMIZATION; LINEAR EQUATIONS; FINITE ELEMENT METHOD
Downloads: 66
[texts]On b. g. galerkin's method for the solution of boundary value problems (o methode b. g. galerkina dlya resheniya krayevykh zadach) - Keldysh, M. V
Galerkin method of solving boundary value problems for certain types of linear differential equations
Keywords: BOUNDARY VALUE PROBLEMS; DIFFERENTIAL EQUATIONS; GALERKIN METHOD; LINEAR EQUATIONS; LINEARITY; BOUNDARY VALUE PROBLEM; DIFFERENTIAL EQUATION; GALERKIN METHOD
Downloads: 153
[texts]Occurrence and Forms of Water and Ice on the Earth and Beyond, and the Origin(s) of Life - Blake, David F
The natural history of the biogenic elements (H,C,O,N) from their first association within cold molecular clouds to their delivery to the Earth during the late bombardment of the inner solar system, is intimately linked to water ice. The earliest organic compounds are formed in cold interstellar molecular clouds as a result of UV and thermal processing of sub-micrometer ice grains which contain trapped carbon and nitrogen molecules...
Keywords: MULTIDISCIPLINARY DESIGN OPTIMIZATION; ACCURACY; MATHEMATICAL MODELS; NUMERICAL ANALYSIS; LINEAR EQUATIONS; SURVEYS; NAVIER-STOKES EQUATION; FINITE ELEMENT METHOD
Downloads: 120
[texts]Vacuum-Induction, Vacuum-Arc, and Air-Induction Melting of a Complex Heat-Resistant Alloy - Decker, R. F.
The relative hot-workability and creep-rupture properties at 1600 F of a complex 55Ni-20Cr-15Co-4Mo-3Ti-3Al alloy were evaluated for vacuum-induction, vacuum-arc, and air-induction melting. A limited study of the role of oxygen and nitrogen and the structural effects in the alloy associated with the melting process was carried out. The results showed that the level of boron and/or zirconium was far more influential on properties than the melting method...
Keywords: LATERAL CONTROL; TRAJECTORIES; ROTATION; LONGITUDINAL CONTROL; TRAJECTORY CONTROL; SEQUENTIAL CONTROL; CONTROL SYSTEMS DESIGN; EARTH ATMOSPHERE; LINEAR EQUATIONS; DRAG; LIFT
Downloads: 118
[texts]Rocket booster control. section 16- a minimax control for a plant subjected to a known load disturbance - Gollwitzer, H. E
Open loop optimal control problem for plants represented by linear recurrence equations - rocket booster control
Keywords: BOOSTER ROCKET ENGINES; LAUNCH VEHICLES; LINEAR EQUATIONS; LOADS (FORCES); OPTIMAL CONTROL; LAUNCH VEHICLE; LINEAR EQUATION; OPTIMAL CONTROL
Downloads: 75
[texts]Energy Efficient Engine Low Pressure Subsystem Flow Analysis - Hall, Edward J.
The objective of this project is to provide the capability to analyze the aerodynamic performance of the complete low pressure subsystem (LPS) of the Energy Efficient Engine (EEE). The analyses were performed using three-dimensional Navier-Stokes numerical models employing advanced clustered processor computing platforms. The analysis evaluates the impact of steady aerodynamic interaction effects between the components of the LPS at design and off-design operating conditions...
Keywords: NUMERICAL ANALYSIS; PROBABILITY THEORY; FLUX (RATE); NEUTRONS; MONTE CARLO METHOD; LINEAR EQUATIONS; DIFFUSION THEORY; ANGULAR DISTRIBUTION; SIMULTANEOUS EQUATIONS; SPHERICAL HARMONICS
Downloads: 217
[texts]An evaluation of linear least squares computer programs (Volume 73B) - Wampler, Roy H.
Journal of Research of the National Bureau of Standards
Keywords: Computer programs; Gram-Schmidt orthogonalization; Householder transformations; least squares; linear equations; orthogonalization; orthogonal polynomials; regression; rounding error; stepwise regression
Downloads: 126
[texts]Current research on regenerative systems - Bell, N. L.
Biological and physicochemical reaction systems for regenerative food supply of space flight crew
Keywords: FEEDBACK CONTROL; OPTIMAL CONTROL; SENSITIVITY; AUTOMATIC CONTROL; LINEAR EQUATIONS; SELF ADAPTIVE CONTROL SYSTEMS; SYSTEMS ENGINEERING; TRAJECTORY CONTROL
Downloads: 100
[texts]Performance evaluation of a modified NERVA technology pump in liquid hydrogen at zero NPSP. NERVA program - NON
No Abstract Available
Keywords: OPERATORS (MATHEMATICS); SPECTRUM ANALYSIS; CALCULUS OF VARIATIONS; DIFFERENTIAL EQUATIONS; EIGENVALUES; LINEAR EQUATIONS; PARTIAL DIFFERENTIAL EQUATIONS; QUANTUM THEORY; SCHROEDINGER EQUATION
Downloads: 110
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